An Improved Analytical Reconstruction for Gated Cardiac SPECT Based on Intra-Frame Similarity

摘要：

In a method we proposed before, Karhune-Loéve (KL) transform was used to de-correlate the inter-frame correlation before they are reconstructed. The drawback of this method is that the covariance matrix is estimated based on the assumption that all pixels along the time direction obey the similar time function, while it is not always comply with the situation. In this paper, we propose a potential refinement method for spatio-temporal reconstruction for gated cardiac SPECT. The gated cardiac SPECT frames are grouped into several groups according to their intra-frame similarity. Then the different KL transform strategies are applied to these groups. Experimental computer simulation results show that the approach may obtain better performance than the previous one.

作者: Yi FAN Hongbing LU Chongyang HAO Zhengrong LIANG

作者单位: Department of Electronic Information, Northwestern Polytechnical University Xian, Shaanxi China 710 Department of Computer Applications/BME, Fourth Military Medical University Xian, Shaanxi China 710 Department of Radiology, State University of New York, Stony Brook NY 11794, USA

会议类型: 国际会议

会议名称: 2nd IEEE Conference on Industrial Electronics and Applications(ICIEA 2007)(第二届IEEE工业电子与应用国际会议)

会议地点: 哈尔滨

会议语种:英文

在线出版日期: 2007-05-23（万方平台首次上网日期，不代表论文的发表时间）